Corrugated-pipe construction.



M. J. MOMARTIN.

' CORRUGATED PIPE CONSTRUCTION.

APPLICATION FILED MAR. 20, 1909.

Patented 0011.21, 1913.

COLUMBIA PLANOunAPH ccuwAsulNu'roN, D. c.

lUNfTE STTES PTNT @lBFlQE.

MALCOLM J. MQMABTIN, 0F DULUTH, MINNESOTA, ASSIGNOR TO DULUTH CORRUGAT-ING & ROOFING COMPANY, OF DULUTH,

NESOTA.

MINNESOTA, A CORPORATION OF MIN- CORRUGATED-PIPE GONSTRUCTIGN.

Specification of Letters Patent.

Patented Uct. 21,1913.

Application filed March 20, 1909. Serial No. 484,760.

To all whom it may concern.

Be it known that 1, MALCOLM J. Moll Lin- TIN, a citizen of the UnitedStates, and residing at Duluth, in the county of St. Louis and State ofMinnesota, have invented certain new and useful Improvements inCorrugated-Pipe Construction, of which the following is a specification.

This invention relates to improvements in corrugated pipes and theprimary object of the same is to provide an improved sectional pipehaving transverse ribs or corrugations, and improved means for joiningand securing the sections together.

A further object is to provide an im proved device of this characterwhich will be simple, durable and cheap in construction, effective andetiicie-nt in operation, and in which the sections may be readily nestedfor shipping purposes.

To the attainment of these ends and the acco-mplishinent of other newand useful objects as will appear, the invention consists in thefeatures of novelty in the construc tion, combination and arrangement ofthe several parts hereinafter more fully described and claimed and shownin the accompanying drawing, illustrating the embodiment of theinvention and in whichi igure 1 is a plan view of a section of pipeconstructed in accordance with the principles of this invent-ion. Fig. 2is a trans\'*erse sectional view on line 2-2 of Fig. 1.

Referring more particularly to the drawing and in the presenteXemplifioat-ion of the invention the pipe is provided with transverseribs or corrugations 10 and is divided longitudinally to form twosemi-circular sections. One of the sections 11 is provided withlaterally projecting flanges 13 along the edges thereof which flangesextend longitudinally of the section and may be of any desired width.The other section 12 of the pipe is provided with laterally projectingflanges 14 arranged along the edges and eX- tending longitudinally ofthe sections, and these flanges 13, 14, are adapted to engage and restflat against each other when the pipe sections are assembled. Theflanges on one of the sections, preferably the flanges 14 on the section12, are deflected as at 15 along their edges to form portions arrangedat sub stantially right angles to the flanges and these deflectedportions 15 are adapted to engage the ed es of the respective adjacentflanges 13 on the pipe section 11 and project beyond the faces of theflanges 13. Suitable fastening devices 16, such as bolts or the like,are provided for securing the pipe sections together and these fasteningdevices pass through the flanges 13 and 14, between the periphery of thepipe section and. the respective adjacent deflected portion 15 of theflange.

With this improved construction it will be apparent that the deflectedportions or flanges 15 cooperate with the connecting joint and serve torelieve the fastening devices 16 of any shearing strain and at the sametime will permit the fastening devices to be readily removed todisconnect the pipe sections for shipment purposes. After the sectionshave been disconnected they may be readily nested. Furthermore with thisimproved pipe having transverse ribs or corrugations and the sectionsbeing secured together by the flanges extending longitudinally of thesections and along the edges thereof, a pipe of very great strength anddurability will be obtained.

Vihat is claimed as new is-- 1. A pipe having transverse corrugationsand divided longitudinally into two sections,

each of said sections being provided with flanges projecting laterallybeyond the edges thereof and extending longitudinally of the sections,the flanges of one section resting flat against the respective flangesof the other section, the flanges on one section having their edgesdeflected at angles to their body portions to engage the edges of therespective flanges on the other section, and fastening devices passingthrough the flanges.

2. A pipe having transverse corrugations and divided longitudinally intotwo sections, each of said sections being provided with flangesprojecting laterally beyond the edges thereof and extendinglongitudinally of the sections, the flanges of one section resting flatagainst the respective flanges of the other section, the flanges on onesection having their edges deflected at angles to their body portions toengage the edges of the respective flanges on the other section and toproname to this specification, in the presence of ject beyond the faceof the last said flanges, tWo subscribing Witnesses, on this 11th dayand fastening devices removably passing of February A. D. 1909.

through the flanges between the periphery MALCOLM J. MOMARTIN. 5 ofthe'pipe sections and the respective de- Witnesses:

flected edge of the flanges. M. M. NELSON,

In testimony whereof I have signed my H. A. MOMARTIN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

